Combination-level.



M. F. HOLBROOK.

COMBINATION LEVEL.

APPLICATION FILED JAN.14, 1908. RENEWED OOT.19, 1909.

9555 99,, Patented Apr. 19, 1910.

W W1 TNESSLBU A TTORY.

MILO FRANKLIN HOLBROOK, OF LONGVIEW, TEXAS.

COMBINATION-LEVEL.

Specification of Letters Patent.

Patented Apr. 19, 1910.

Application filed January 14, 1908, Serial No. 410,733. Renewed October19, 1909. Serial No. 523,428.

To all who m, it may concern:

Be it known that I, MILO F. Honnaoon, a citizen of the United States,residm at Longvicw, in the county of Gregg and tatc of Texas, haveinvented certain new and useful Improvements in Combinat-ion-Levels ofwhich the following is c specification.

My invention relates to improvements 1n combination levels, and has forits object the provision of a simple, practical and efficient form oflevel and a cvel in conjunction therewith so that the instrument may beused as alevel,asquare,abevel,an1easuring device for obtaining differentangles of incline, for constructing figures of ditfcrent shape such aspolygons and the like, and which will be generally useful and desirable.

Another obj ect of my invention is the pro vision of a compound plumband spirit level, and with the foregoing and other objects in view, myinvention comprises a combined plumb level and spirit level, the oneserving as a check for the other, and a bevel attachment operating inconjunction with the device.

The invention further consists of a. combination tool embodying certainother novel features of construction, combination and arrangement ofparts substantially as disclosed herein and as illustrated in theaccompanying drawings, in which:

Figure 1, is a frontelevation of the in vention, showing in dotted linesthe manner in which the bevel is adjusted. Fig. '2, is a verticalsectional view of the same. Fig. 3, is a detached detail view of theplumb level.

In the drawin s: the numeral 1', designates the block or ody portion ofthe device, which is provided with a longitudinal seat 2, along itsupper edge to receive the spirit level 3, the level being supported onthe bowed spring yoke 4, and the screws 5, bearing on opposite ends ofthe level glass and serving to properly adjust it. The op Josite edge ofthe block is provided with a longitudinal slot 6, therein to receive therule or straight edge 7. The block has a central circular openingtherethrough and disks or dial lates- 8, serve as closures to thisopening t lcrcby providing a chamber J, for the reception of thependulum of the plumb or gravity level. A staff 10, is journaled betweenthe two dial plates, the staff having a knife edge 11, to reducefriction, and the staff carries upon its opposite ends the pointers 12,which register upon the dials, the dials being properly graduated withdivi- 810113 and numerals. A pendulum 13, is suspended from the stall bymeans of the link or connection 14, the pendulum being received in thechamber formed between the two dials as shown in Fig. .2.

In order to adapt the instrument to measuring and laying off differentdegrees of inclination, a rule 15 which serves as abevel, is pivoted tothe center of the front or face dial, the upper edge of the rule orblade being on a line with the pivotal center of the level stall. Inorder to pivot the bevel to the dial in this way, a bracket 16, may besecured to the face dial and oifset therefrom the thumb screw 17,serving to adjustably hold the bevel at the center of the dial. The rimof the face dial is n'eferably extended outwardly and directe angular-1yto form an oifset annular flange 18, parallel to the body of the dialand an annular ring member 19, surromids the flanged edge of the dialand is spaced therefrom to provide the slot 20, for the guidance of theshank of the hooded bolt or stud 21, the head of such bolt beingreceived in the channeled portion 22, beneath the annular slot. The

oltpasses up through the bevel and a thumb screw 23, is engaged on theend thereof to clamp the bevel in adjusted position.

The uses and advantages of my invention will be readily apparent and itwill be seen that it may be used as an ordinary tr square, as a level,and as a bevel. T e plumb and spirit levels serve as a check one uponthe other and when the plumb level indicates that the spirit level isout of true, it may readily be correctly adjusted by means of the setscrews.

A separate rule may be furnished to be used in the slot in the levelblock, or when so desired, the bevel may be detached from the dial andplaced in the slot for a rule.

From the foregoing description taken in connection with the drawings it.will be evidentthat I. have produced a. device of the character set.forth which fully and satisfactorily accomplishes all the objects hereinset forth and which is 'n'uclieal and desirable in every way.

I claim:

1. A block, a poudulun'l mounted therein, a spirit tube adjustablymounted in the block, a rule slldably engaged in one edge of the block,a blade pivotally mounteol, mull means for clamping the blade m ad ustedi position. I 2. A combination love] and bevel COIllIJllS- ing a pair ofdial plates, :1 penqll lum plvoted between said dial plates, :1 spmttubeserving in conjunction with the plumb level, I a Slotted annularguideway sul roundlng one of the dial plates, :1 blade plvoted to thecenter of one of the dial Elates, and clamping means carried by tho ladeand renewed in the slotted annular guldeway.

A compound lnslrui'ncul comprising a pair of dial plates, a pendulummounted between said dial plates, :1 blade pivoted to 15 the center of(mo of the dial plate-s, and moa ns for clamping said blade 1n adjustedposition.

In testimony whereof I ufllx my signature, in presence of two witnesses.

MILO FRANKLIN HOLBROOK.

Witnesses DUSI-I SHA'W, ABE BEHYMI-JR.

